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Jérôme OLLIER

Using Satellite AIS to Analyze Vessel Speeds Off the Coast of Washington State, U.S., a... - 0 views

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    Most species of whales are vulnerable to vessel collisions, and the probability of lethality increases logistically with vessel speed. An Automatic Identification System (AIS) can provide valuable vessel activity data, but terrestrial-based AIS has a limited spatial range. As the need for open ocean monitoring increases, AIS broadcasts relayed over earth-orbiting satellites, satellite AIS (SAIS), provides a method for expanding the range of AIS broadcast reception. We used SAIS data from 2013 and 2014 to calculate vessel density and speed over ground around the coast of Washington state in the northwestern United States. Nearby shipping lanes connecting the Ports of Seattle, Tacoma, Portland, and in Canada, Vancouver, have the greatest density of vessel traffic arriving and departing. Knowledge of shipping activity is important in this area due to the nearby presence of NOAA designated Cetacean Density and Distribution Working Group's Biologically Important Areas (BIA) for large whale species vulnerable to vessel collisions. We quantified density and speed for each vessel type that transits through BIA's. We found that cargo and tanker vessels traveled the farthest distance at the greatest speeds. As ship-strike risk assessments have traditionally relied on terrestrial AIS, we explored issues in the application of SAIS data. Temporal gaps in SAIS data led to a resulting systematic underestimation of vessel speed in calculated speed over ground. However, SAIS can be helpful in documenting minimum vessel speeds across large geographic areas and across national boundaries, especially beyond the reach of terrestrial AIS receivers. SAIS data can also be useful in examining vessel density at broad scales and could be used to assess basin-wide open ocean routes. Future use of additional satellite platforms with AIS receivers and technological advances will help rectify this issue and improve data coverage and quality.
Jérôme OLLIER

Quantifying Ship Strike Risk to Breeding Whales in a Multiple-Use Marine Park: The Grea... - 0 views

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    Spatial risk assessments are an effective management tool used in multiple-use marine parks to balance the needs for conservation of natural properties and to provide for varying socio-economic demands for development. The multiple-use Great Barrier Reef Marine Park (GBRMP) has recently experienced substantial increases in current and proposed port expansions and subsequent shipping. Globally, large whale populations are recovering from commercial whaling and ship strike is a significant threat to some populations and a potential welfare issue for others. Within the GBRMP, there is spatial conflict between the main breeding ground of the east Australian humpback whale population and the main inner shipping route that services several large natural resource export ports. The east coast humpback whale population is one of the largest humpback whale populations globally, exponentially increasing (11% per annum) close to the maximum potential rate and estimated to reach pre-exploitation population numbers in the next 4-5 years. We quantify the relative risk of ship strike to calving and mating humpback whales, with areas of highest relative risk coinciding with areas offshore of two major natural resource export ports. We found females with a dependent calf had a higher risk of ship strike compared to groups without a calf when standardized for group size and their inshore movement and coastal dependence later in the breeding season increases their overlap with shipping, although their lower relative abundance decreases risk. The formalization of a two-way shipping route has provided little change to risk and projected risk estimates indicate a three- to five-fold increase in risk to humpback whales from ship strike over the next 10 years. Currently, the whale Protection Area in the GBRMP does not cover the main mating and calving areas, whereas provisions within the legislation for establishment of a Special Management Area during the peak breeding season in high-ris
Jérôme OLLIER

Clean Marine Fuels: Total charters its first LNG-powered Very Large Crude Carriers - @T... - 0 views

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    Total signed a pioneering agreement to charter its first two LNG-powered VLCCs (Very Large Crude Carrier). The two vessels, which are able to carry about 300,000 tons of crude oil each, will be delivered in 2022 and will join the time-chartered fleet of Total. These VLCCs will be chartered from Malaysian shipowner AET.
Jérôme OLLIER

Argentine : un sous-marin de l'armée, avec 38 personnes à bord, porté disparu... - 0 views

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    Argentine : un sous-marin de l'armée, avec 38 personnes à bord, porté disparu au large de Buenos Aires.
Jérôme OLLIER

Impact of Ship Traffic on the Characteristics of Shelf Sediments: An Anthropocene Prosp... - 0 views

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    Humans have been sailing across seas and oceans for thousands of years. However, the story of large ships capable of affecting coastal ecology and shelf sedimentary processes is only about 100 years old. Modern large seagoing vessels with a draft of 10-20 m can cause resuspension of seabed sediment, erosion of the channel slope and shoal, enhancement of seafloor sediment activity and thickening of the active layer, thereby having a significant impact on seabed topography and sedimentation processes. However, little is known about the effects of this anthropogenic agent on shelf sedimentation due to limited observational data. Here, two sediment cores were collected from a shipping lane used by vessels of 5,000- to 50,000-ton off the coast of China to analyze their sedimentary properties, with focus on both the grain size and elements. It was found that ship disturbance selectively modified the sedimentary record, with the fine-grained sediment becoming increasingly unstable. In addition, there was a reduction in grain size of sediment finer than 6.25 Φ, which decreased by 11% after the disturbance by ship. Biogenic elements that were closely related to the ecological environment were significantly altered, with Br/Cl, Si/Ti, and Ca/Ti ratios all becoming significantly smaller. This indicated that frequent disturbance caused by ships had reduced the productivity in the waters near the shipping lane. In terms of sensitivity to the effects of ship navigation, the sedimentation response was relatively rapid and began to emerge from the commencement of ship navigation, whereas the ecological response became evident later than the sedimentation response and only appeared after a significant growth in the maritime transportation of China. Following the comparison of the two sediment cores, we propose that the constant rate of supply (CRS- with ship disturbance)-constant initial concentration (CIC- without ship disturbance) dual dating model be used to establish a dati
Jérôme OLLIER

Evaluating Adherence With Voluntary Slow Speed Initiatives to Protect Endangered Whales... - 0 views

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    Vessel strikes are one of the main threats to large whales globally and to endangered blue, fin, and humpback whales in California waters. For over 10 years, NOAA has established seasonal voluntary Vessel Speed Reduction (VSR) zones off of California and requested that all vessels 300 gross tons (GT) or larger decrease speeds to 10 knots or less to reduce the risk of vessel strikes on endangered whales. We offer a comprehensive analysis quantifying cooperation levels of all vessels ≥ 300 GT from 2010 to 2019 within designated VSR zones using Automatic Identification Systems (AIS) data. While average speeds of large vessels have decreased across the years studied, cooperation with voluntary 10-knot speed reduction requests has been lower than estimated to be needed to reduce vessel-strike related mortality to levels that do not inhibit reaching and maintaining optimal sustainable populations. A comparison of vessel speeds across inactive and active voluntary VSR time periods show a modest (+ 15%) increase in cooperation from 2017 to 2019. A complementary, incentive-based VSR program that was started in 2014 and scaled up in 2018 within the region likely improved voluntary VSR cooperation levels, as participating container and car carrier vessels traveled at lower speeds during the VSR season than vessels not enrolled in the incentive-based effort. Comparisons of vessel speeds in the incentive-based VSR program across inactive and active time periods showed a significant (+ 41%) increase in cooperation. With cooperation levels for the voluntary VSR hovering around 50%, and the challenge of funding and sustaining an incentive-based VSR program, voluntary VSR approaches may be insufficient to achieve cooperation levels needed to significantly reduce the risk of vessel strike-related mortality for these federally protected whales, suggesting that VSR regulations warrant consideration.
Jérôme OLLIER

Impact of the Construction of New Port Facilities on Primary Production of Plankton in ... - 0 views

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    A significant increase in the human population on marine coast and steady growth of maritime water transport causes the construction of port infrastructure and the creation of new lands, which affects the ecosystems of coastal waters. Despite the widespread occurrence of such large-scale engineering projects in coastal areas, their impact on various components of aquatic ecosystems, including phytoplankton, is still poorly understood. The aim of the study was to assess the effect of the construction of ports and the alluvium of new lands in the Neva Estuary in 2000s on the productivity of phytoplankton. Digging and dredging of bottom sediments results in one order of magnitude elevation of suspended particulate matter (SM), which mostly consisted of sand and clayed deposits and in significant decrease water transparency, as compared to the average long-term values. Concentrations of total phosphorus in the estuarine waters during the works significantly positively correlated with the concentrations of SM. However, the multiple increase in nutrients was less important for phytoplankton development than expected. Analysis of variance and stepwise multiple regression analyses showed that the main predictor of the primary production of plankton in the periods of construction was water transparency. Gross primary production decreased significantly. In contrast to short-term effects caused by wind-induced events, which often stimulated phytoplankton development, long-term construction works of new port facilities negatively influenced phytoplankton productivity. Apart from pristine conditions when the phosphorus concentration was the main factor limiting the primary production in the estuary, the main limiting factor during long-term engineering projects became water transparency. Taking into account plans for further development of ports in coastal areas around the world, the influence of the large-scale engineering projects on the conditions for the development of phyto
Jérôme OLLIER

North-East Passage soon free from ice again? Winter measurements show thin sea ice in t... - 0 views

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    Bremerhaven, 8 June 2012, The North-East Passage, the sea route along the North coast of Russia, is expected to be free of ice early again this summer. The forecast was made by sea ice physicists of the Alfred WEGENER Institute for Polar and Marine Research in the Helmholtz Association based on a series of measurement flights over the LAPTEV Sea, a marginal sea of the Arctic Ocean. Amongs experts the shelf sea is known as an "ice factory" of Arctic sea ice. At the end of last winter the researchers discovered large areas of thin ice not being thick enough to withstand the summer melt.
Jérôme OLLIER

Watch: MHI Delivers "AIDAprima," a New-Generation Cruise Ship - @MarineInsight - 0 views

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    Mitsubishi Heavy Industries, Ltd. (MHI) completed delivery of the AIDAprima, the first of two large cruise ships being built for AIDA Cruises at MHI's Nagasaki Shipyard & Machinery Works.
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    Mitsubishi Heavy Industries, Ltd. (MHI) completed delivery of the AIDAprima, the first of two large cruise ships being built for AIDA Cruises at MHI's Nagasaki Shipyard & Machinery Works.
Jérôme OLLIER

Via @LatitudePolaire - Large object that could be missing Mi-8 helicopter located on Ar... - 0 views

shared by Jérôme OLLIER on 27 Oct 17 - No Cached
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    Large object that could be missing Mi-8 helicopter located on Arctic seabed.
Jérôme OLLIER

Via @DolphinSeeker30 @bluewhalenews - Report on 14 Large Whales That Died due to Ship S... - 0 views

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    Report on 14 Large Whales That Died due to Ship Strikes off the Coast of Sri Lanka, 2010-2014.
Jérôme OLLIER

Via @ OCEANUSLive - 'Do you have an AK-47 and can you swim?' - @BBCNews - 0 views

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    With piracy spreading along large swathes of Africa's coast, shipping firms and governments are deploying hi-tech weapons in the fight against the raiders.
Crooj Cropter

Rescue Yourself From Low Credit Rating And Get Easiest Finances Via Online - 0 views

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    Money loans for people with no credit check are important when somebody wishes loan on squeezing premise and don't have room schedule-wise to satisfy thorough tenets and controls that is by and large required ahead of time giving administrations of banks and financial foundations.
Jérôme OLLIER

Joint Saudi fund launched to buy oil tankers - @APF via @MailOnline - 0 views

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    Saudi Arabia's national shipping company and the Arab Petroleum Investments Corp. (APICORP) have launched a joint fund to purchase large oil tankers for the kingdom, an official statement said on Monday.
Jérôme OLLIER

Un ferry grec sauve 61 migrants en mer, 2.500 arrivent au Pirée de Lesbos - @... - 0 views

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    Un ferry grec a sauvé lundi 61 migrants menacés de naufrage au large de l'île égéenne de Lesbos, première étape vers l'Europe occidentale...
Jérôme OLLIER

Migrants : plus de 1.800 personnes secourues lundi en Méditerranée - @AFP via... - 0 views

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    Plus de 1.800 migrants ont été sauvés lundi en Méditerranée, lors de 6 opérations au large des côtes libyennes.
seosscs

Party Cruises - 0 views

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    Coast is a stylish spacious and stable catamaran, Suited for large parties. Cruise Sydney Harbour provides unique backdrop for private functions. Coast caters provides occasions range from private parties, weddings, social events, product launches and more. Sydney Superyacht Charters can tailor your charter to suit your every desire.
Jérôme OLLIER

Via @PlaneteNAUSICAA - Somalie : il faut s'attaquer aux causes profondes de la pirateri... - 0 views

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    A l'occasion d'une réunion du Conseil de sécurité sur la piraterie au large de la Somalie, le Secrétaire général adjoint aux affaires politiques, Jeffrey FELTMAN, a souligné mercredi les progrès réalisés contre ce fléau mais a jugé qu'il fallait aider la Somalie à développer ses institutions pour s'assurer que ces progrès perdurent.
Jérôme OLLIER

Wreckage Of El Faro Found Upright And Intact On Ocean Floor - @MarineInsight - 0 views

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    A large ship found in deep water off the Bahamas is the lost freighter El Faro that sank with 33 crew members in a hurricane last month, U.S. authorities said on Monday.
Jérôme OLLIER

Study identifies which marine mammals are most at risk from increased Arctic ship traff... - 0 views

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    In August 2016, the first large cruise ship traveled through the Northwest Passage, the northern waterway linking the Atlantic and Pacific oceans. The following year, the first ship without an icebreaker plied the Northern Sea Route, a path along Russia's Arctic coast that was, until recently, impassable by unescorted commercial vessels.
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